Again guys, many thanks. I have just ordered a rebuild kit.

Do I have to build a jig to rebuild it? I tried several of the vac links but I always ended up at a dead end link at the end of the chain of links. Anyone got a link with pics?

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1984 300 SD, 2 tank WVO
1996 Ram Cummins, 2 tank WVO,
2004.5 Ram Cummins, 2 tank WVO